Concrete-insert.



W. B. MILLAR. CONCRETE INSERT.

* APPLICATION FILED @1146, 1914.

1,1 14,013. Patented 0cth2-,.m1.4.

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Specification of Letters Patent. I

Patented Oct. 20, 1914.

Application nled January 16, 1914. Serial No. 812,553.

T 0 all whom it may concern:

Be it known that "I, lVILLIAM B. MILLAR, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Concrete-Inserts, of which the following is a specification, the accompanying drawings.

This invention relates to a concrete insert, and more particularly to means for holding or supporting articles, such as hangers for shafting and pipes of automatic sprinkler systems from the walls, floors, or ceilings of buildings which are made of concrete or other material, which is put in position while in a plastic state and afterward har-' dens, so that anything placed in engagement firmly held to preclude any danger of accidental displacement.

The primary object of my invention is to provide an insert of the above type that can be easily and quickly connected to a mold board and correctly positioned whereby it will become firmly anchored in a concrete structure, flush with the face thereof and present a neat appearance when not in use.

A further object of my invention is to prox'ide a simple, durable and inexpensive insert of the above type that does not interfere with the disassembling of the parts of a mold, the running or tamping of concrete in the ordinary and well known man ner, or impair the strength of a structure in mounted.

How I obtain the above and other objects will hereinafter appear, and reference will now be had to the drawing, wherein Figure 1 is a cross sectional view of a concrete girder in the pro/gem of formation, showing the insert as supported by a mold board, Fig. 2 is a cross sectional View of a portion of the girder with the insert in osition; Fig. 3 is an enlarged perspectlve view of the insert Fig. 4 is a side elevation of an insert pin in position to enter a mold board, and Fig. 5 is a similar view showing the pin mounted in the board.

To put my invention into practice, I provide a mold board 1 with an opening 2 and detachably mounted in said openin is an insert pin 3 having one end thoreo screw threaded, as at 4 and the opposite end thereof provided with a cylindrical head 5. The outer end of the head 5 is tapered or beveled, as at 6 and at the junction of said reference being had therein to head with the pin 3 there is an annular shoulder 7 adapted to engage the under side of the mold board 1 and prevent the pin from becoming accidentally displaced after having been placed in engagement therewith. The pin 3 corresponds in diameter to the diameter of the opening 2 and the head 5 is of a diameter slightly greater than that of the pin 3, whereby afterthe head 5 has been driven through the opening 2 the material forming the walls of said opening will engage the pin 3 between the head 5 and the threaded end of said pin. It is therefore apparent that when driving the pin into the opening 2 that the material forming the .walls of said opening is compressed, but immediately expands or assumes its natural condition and position 2115- ter the head 5 has ing.

The insert proper comprises a metallic block 8 having a central opening 9 with the walls thereof screw threaded, whereby said block can be screwed uponthe threaded end 4 of the pin 3 against the upper side of a mold board 1. The block 8 has the function of a nut and is preferably rectangular, and adjacent to the bottom side of said block there are transverse parallel openings passed through the open- 10 adapted to receive the malleable arms 11 of a tying or anchoring member 12. The member 12 is preferably in the form of a in a vertical plane relatively to the block 8. This is also true of the open end of the yoke and the extremities thereof are bent outwardly in a horizontal plane in parallelism with the block, whereby the closed and open ends of the yoke can 'be completely surrounded by concrete or other cementitious material and the block firmly anchored therein. The ends of the tying or anchoring member can be bent in various directions to accomplish practically the same purpose or may rest upon or be connected to metallic reinforcements used in connection with a concrete structure.

' As an example of the installation of the concrete insert there is illustrated a girder 13 in its formative stage supported by a mold 14 including the mold board 1. After the girder has become indurate and seasoned the mold 14 can be removed and the mold board 1 stripped from the insert pin 3, or a suitable tool, as a pipe wrench can be applied to the head 5 of yoke and the closed end thereof is disposed the pin and the pinremoved from the block 8. With the pin removed a threaded member can be placed in engagement with the block 8' to support adesired article. v

It is thought that the utility of the concrete insert will be apparent without further description, and while in the drawing there is illustrated a preferred embodiment of my invention, it is to be understood that the "structural elements are susceptible to such variations and modifications as fall withinthe scope of the appended claims.

What I claim is 1.--In 'a' concrete insert, the combination with aperforated mold board, of a-pin having a-head'adapted'to be forced through the perforatlon of saidboard to retam said boardin engagement therewith, a block de-- tachably connected to said pin and provided with transverse openings, and an 'anohoring member mounted in-the openings of said block and having the ends thereof disposed at an angle relatively to said block.

2. Ina concrete insert, the combination .with a perforated mold board, of a pin having one-end thereof threaded, a head carried by the opposite end of said pin and ad'a ted to retain said pin in engagement -wit said mold board, a block screwed upon the threaded end of said pin, and an anchoring member extending through said block :and havlng the ends thereof disposed at an .angle relatively to said block.

' 3. In a concrete insert, the combination with a perforated mold board, of a pin having a head adapted to be forced through the perforation of said board to retain the board 'upon said pin, a, block detachably mountedeupon said pin,and a malleable anchoring member extending through said block.

In testimony whereof I afiix my signature in presence of two witnesses.

1 WILLIAM MILLAR.

Witnesses:

LEWIS E. FLANDERS,

ANNA M. Donn. 

